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61,005 resultsShowing papers similar to Distribution and occurrence of microplastics in estuaries of São José Bay, Brazilian equatorial margin
ClearCaracterização de microplásticos em amostras marinhas e estuarinas
This study characterized microplastics collected from marine and estuarine samples in Brazil, classifying them by size, shape, and polymer type. The findings document the widespread presence of microplastic contamination in these coastal ecosystems and provide baseline data for future monitoring.
Microplastic occurrence, distribution, and zonation at Paraná’s beaches—South of Brazil
Researchers conducted the first survey of microplastic distribution and zonation on beaches in Paraná state, southern Brazil, characterizing MP concentrations, polymer types, and morphologies across multiple beach zones to establish a baseline for this understudied South American coastline.
Meso- and microplastic composition, distribution patterns and drivers: A snapshot of plastic pollution on Brazilian beaches
A standardized survey of plastic pollution across 22 sandy beaches spanning over 4600 km of Brazilian coast found widespread contamination in coastal sediments, with polymer type, size, and distribution patterns reflecting diverse sources including fishing activity and urban runoff.
Dispersão de microplásticos em águas superficiais e sedimentos de fundo da plataforma continental de Fortaleza
Researchers examined the distribution and characteristics of microplastics in surface waters and bottom sediments of the continental shelf off Fortaleza, Brazil, characterizing MP abundance and morphology to assess contamination levels in this South American marine environment.
Litter assessment on sandy beaches along the Brazilian coast: a large-scale analysis of macrolitter and microplastics
Researchers conducted a large-scale assessment of macrolitter and microplastic contamination on sandy beaches along the Brazilian coast, characterizing pollution patterns, dominant polymer types, and potential anthropogenic sources across multiple sites.
Microplastics in brazilian marine environments: a study on beaches in São Francisco do Sul - SC
Beach surveys along São Francisco do Sul in southern Brazil confirmed widespread microplastic presence in coastal sediments, with polymer composition reflecting regional plastic waste streams. The study adds to the body of evidence that Brazilian coastlines are significantly contaminated and calls for national monitoring standards to track and manage the problem.
Microplastic in the sediments of a highly eutrophic tropical estuary
Researchers quantified and characterized microplastics in sublittoral sediments of Guanabara Bay, a highly eutrophic tropical estuary in Brazil, finding widespread contamination with fibers and fragments at concentrations reflecting the bay's heavy urbanization and poor waste management.
Characterization of microplastics in marine and estuarine samples
This study characterized microplastics from marine and estuarine environments in Brazil, finding primary microplastics (pellets and beads) alongside secondary particles formed from degradation of discarded plastic. The work highlights the diverse sources and types of microplastic pollution in South American coastal waters.
Microplastic pollution in Brazil's coastal marine surface waters: The first macroregional baseline from the global south
Researchers conducted the largest microplastic survey in the Global South, sampling 4,134 surface water sites across 7,500 km of Brazilian coastline, finding the highest concentrations in the Eastern Coastline (16.87 MPs/L) and lowest in the Amazonian Equatorial region (1.29 MPs/L), with spatial patterns driven by hydrodynamic conditions, salinity, proximity to sewage, and anthropogenic inputs.
Microplastic abundance and distribution in surface water and sediment collected from the coastal area
Researchers found microplastics in both surface water and sediments across 12 coastal sampling sites in Jakarta Bay, Indonesia, documenting their abundance, distribution patterns, and morphological characteristics in a heavily urbanized tropical coastal environment.
Microplastic Identification and Density In Coastal Sediments of Manado Bay
Researchers identified and quantified microplastics in coastal sediments of Manado Bay, documenting the density and polymer types of plastic particles accumulating in the marine environment from anthropogenic activities.
Microplastics on the Fluvio-estuarine Beaches of Cotijuba Island, Pará River Estuary (Brazil)
Microplastics were found on the fluvio-estuarine beaches of Cotijuba Island in Brazil's Pará River Estuary, with fragments and films as the dominant types. The study adds to evidence of widespread microplastic contamination in tropical South American coastal and estuarine environments.
Spatio-seasonal microplastics distribution along a shallow coastal lagoon ecocline within a marine conservation unit
Researchers conducted monthly sampling along a shallow coastal lagoon ecocline in a Brazilian marine conservation unit and found seasonal variation in microplastic abundance driven by rainfall and river inputs, with polyethylene and polypropylene fibers and fragments dominating the samples.
Spatial distribution and characteristics of microplastic particles in sediments at Belawan Estuary, North Sumatra Province
Researchers characterized the spatial distribution and properties of microplastic particles in sediments at Belawan Estuary in North Sumatra, Indonesia, providing baseline data on microplastic abundance, morphology, color, and polymer composition at a site with no prior microplastic research to inform future ecological assessments of this estuarine system.
Microplastic Hotspots on a Tropical Estuarine-Bay System
Researchers mapped microplastic hotspots in the Santos Estuarine System in Brazil — the most populous estuary and largest seaport in the country — characterizing accumulation and export dynamics of microplastics in a high-traffic coastal environment.
Microplastic in an Urbanized Estuary on the Brazilian Equatorial Margin: Analysis of Contamination in Commercially Intent Fish, Water and Sediment in the Anil River
Researchers analyzed microplastic contamination in fish, water, and sediment samples from the Anil River estuary on the Brazilian Equatorial Margin, focusing on commercially important fish species in an urbanized estuarine environment.
Characterization of environmental microplastics present in unconsolidated sediments in coastal waters of 9 beaches on shoreline of Rio de Janeiro, Brazil
Researchers characterized environmental microplastics in unconsolidated sediments from nine beaches along the southern coast of Brazil, identifying particle abundance, morphology, color, and polymer composition. The study documented widespread microplastic contamination at all sampled coastal sites, with fragments and fibers being the dominant morphological types found in the sediment samples.
Abundance and characteristics of microplastics in beach sediments: Insights into microplastic accumulation in northern Gulf of Mexico estuaries
Researchers surveyed microplastic abundance in beach sediments across seven locations in Mobile Bay, a northern Gulf of Mexico estuary. The study found microplastics were ubiquitous at concentrations 66 to 253 times higher than reported for the open ocean, with polypropylene and polyethylene being the most common polymers, highlighting the extent of microplastic accumulation in estuarine environments.
The contribution of estuaries to the abundance of microplastics in Jakarta Bay, Indonesia
Researchers found that rivers draining into Jakarta Bay are a major source of microplastics, with polyethylene fragments in the 300-500 micrometer size range dominating, and that spatial variation in abundance across nine estuaries reflects differences in local land use and waste management.
Analysis of the occurrence of microplastics in beach sand on the Brazilian coast
Researchers evaluated microplastic occurrence in beach sand along the Brazilian coastline using a simplified methodology. The study found widespread microplastic contamination and identified potential pollution sources linked to coastal urbanization and ocean currents.
Spatio-temporal evaluation of macro, meso and microplastics in surface waters, bottom and beach sediments of two embayments in Niterói, RJ, Brazil
Researchers evaluated macro, meso, and microplastic distribution across surface waters and sediments in two Brazilian embayments, finding microplastics comprised 83% of collected waste with highest concentrations (138.41 items/kg) in beach sediments dominated by HDPE, polypropylene, and styrene. Beach sediments showed elevated microplastic concentrations during the rainy season and were identified as the most informative compartment for tracking plastic waste dynamics over time.
Spatial distribution patterns and identification of microplastics on intertidal sediments from urban and semi-natural SW Atlantic estuaries
Microplastic spatial distribution and polymer types were mapped in intertidal sediments of Portuguese estuaries, environments that act as transition zones between rivers and the sea. The study found both buoyant and non-buoyant microplastics accumulating in estuarine sediments, highlighting their role as microplastic sinks.
Study on the Mass Concentration Distributions of Marine Microplastics in Estuaries and Coastal Areas
Researchers characterized the mass concentration distribution of marine microplastics in estuarine and coastal environments, measuring spatial gradients between river mouths and open coastal waters and identifying estuaries as major transition zones for microplastic flux.
Microplastics on Santos Beach: Sources of Pollution, Waste Characteristics and Possible Collection Solutions
Researchers characterized microplastics collected from three zones of Santos beach in Brazil, finding contamination dominated by fragments and films near sewage outfalls. The study highlights inadequate waste management as the primary driver of beach microplastic accumulation and assessed feasibility of mechanical collection interventions.